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Location:Home >> News >> Technical ServiceChlorine VS UV disinfection
From: The Site Author: admin DateTime: 2015-3-24
Chlorine VS UV disinfection
UV is an ideal disinfectant for wastewater since it does not alter the water quality – except for inactivating microorganisms. UV is a chemical-free process that can completely replace an existing chlorination system and also inactivate chlorine-resistant microorganisms like Cryptosporidium and Giardia. Unlike other chemical disinfectants, UV does not produce any carcinogenic disinfection by-products that could adversely affect the water quality. There is also an added benefit of reducing the carbon footprint of the disinfection system when a plant switches to UV since the carbon dioxide emissions from chemical transportation is eliminated.
Chlorine gas has traditionally been used for wastewater disinfection for many years. Sodium hypochlorite (liquid bleach) is an alternative to chlorine gas; however, it is more costly and has the same environmental concerns. UV disinfection can easily be retrofitted into an existing chlorine contact tank and has significant benefits compared to chlorine disinfection.
The increasing concerns about the hazards of chlorine disinfection to the public, the operators and the environment have dramatically increased the cost of chlorination and dechlorination chemicals along with the administrative efforts required to meet safety regulations. As a result, UV disinfection has increasingly become the choice for wastewater disinfection due to some significant advantages over chlorine-based disinfection. Specifically, UV has been proven effective in various types of effluent, requires less maintenance, and is cost-effective.
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